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Reports escaped meta characters.
Some RegExp coding styles specify that meta characters should be placed inside a character class,
to make the regular expression easier to understand.
This inspection does not warn about the meta character <code>[</code>, <code>]</code> and <code>^</code>,
because those would need additional escaping inside a character class.
<p><b>Example:</b></p>
<pre><code>
  \d+\.\d+
</code></pre>
<p>After the quick-fix is applied:</p>
<pre><code>
  \d+[.]\d+
</code></pre>
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<p><small>New in 2017.1</small>
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